In an August 18 Instagram post, Colin shared: "Ok ok we had a baby ... MORE: Scarlett Johansson and Colin Jost's son Cosmo is taking after dad in rare picture of private life The former couple ...

MORE: Scarlett Johansson and Colin Jost's private sanctuary to raise new baby boy He continued: "His middle name is my grandpa's name and [Cosmo has] the spirit of a lot of the great things in my ...

Scarlett Johansson has given birth to her first child, a baby daughter called Rose, with her fiancé Romain Dauriac. A spokesperson for the 29-year-old Avengers actress said both mum and daughter ...